Description

Polysorbate 40 is a nonionic surfactant and emulsifier derived from sorbitol and palmitic acid. Its primary value lies in its ability to stabilize oil-in-water emulsions and solubilize lipophilic compounds in aqueous systems. This makes it a critical functional ingredient for manufacturers in the pharmaceutical, cosmetic, and food industries seeking reliable and compliant excipients.

Application

• Pharmaceutical Formulations: Used as a solubilizer and emulsifying agent in oral solutions, syrups, and topical creams to enhance the bioavailability of poorly soluble active pharmaceutical ingredients (APIs).
• Cosmetics & Personal Care: Acts as a key emulsifier and surfactant in creams, lotions, and hair care products, providing stable texture and improved spreadability.
• Food Industry: Employed as an emulsifier (E434) in baked goods, dairy products, and edible coatings to ensure uniform texture and prevent ingredient separation.
• Industrial Applications: Functions as a dispersing agent and wetting agent in agrochemicals, textile processing, and industrial cleaning formulations.
• Vitamin & Supplement Production: Utilized to solubilize fat-soluble vitamins (A, D, E, K) in aqueous-based nutritional and dietary supplement products.

Basic Information

Product Name	Polysorbate 40
CAS No.	9005-66-7
Molecular Formula	C62H122O26 (for the main component)
Molecular Weight	~1283.6 g/mol (average)
Synonyms	Polyoxyethylene (20) sorbitan monopalmitate; Tween 40; POE (20) sorbitan monopalmitate; Sorbitan, monopalmitate, poly(oxy-1,2-ethanediyl) derivs.; E434; Polysorbatum 40; (Oxy-1,2-ethanediyl) derivs. of sorbitan monopalmitate
EINECS	500-019-9

Quality Control

Our Polysorbate 40 is manufactured under strict quality management systems. It can be supplied in grades compliant with major pharmacopoeial standards, including USP-NF, Ph. Eur., and FCC, ensuring suitability for regulated applications. Every batch undergoes rigorous analytical testing for identity, purity, and performance. Certificates of Analysis (COA) documenting full specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture. For long-term storage under optimal conditions, consider using an inert atmosphere to minimize oxidation.

Specification

Item	Specification
Description	Yellowish to amber viscous liquid
Identification (IR)	Conforms
Assay (Saponification Value)	41 - 52
Acid Value	≤ 2.0
Hydroxyl Value	90 - 107
Water Content (KF)	≤ 3.0 %
Residue on Ignition	≤ 0.25 %
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.